Hid lamp having an arc tube with offset press seals

Details Hid lamp having an arc tube with offset press seals Hid lamp having an arc tube with offset press seals

1995-01-17

1996-06-11

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313 25, 313573, H01J 6130

Patent

active

055258638

ABSTRACT:
A high pressure discharge lamp having an arc tube for operation in a generally horizontal position. The arc tube has a generally cylindrical body with end chambers of continuously reducing cross-section in which respective discharge electrodes are arranged. Press seals sealing the end of the arc tube in a gas tight-manner are offset from the axis of the cylindrical body in a direction normal to the press seals and away from the tip-off. The lower circumferential portion of the cylindrical body is smoothly curving and free of flats and the lower portions of the end chambers are smoothly curving and free of crevices.

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patent: 5016150 (1991-05-01), Gordin et al.
patent: 5051655 (1991-09-01), Wiley
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